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Artikel Jurnal
Parameter sensitivity of SWAP–PEARL models for pesticide leaching in macroporous soils
Abstract Pesticide transport simulation by SWAP–PEARL (Soil–Water–Atmosphere–Plant and Pesticide Emission Assessment at Regional and Local scales) models can help to predict pesticide leaching at regional scales. For reasons of economic and time efficiency, measurement efforts should be prioritized…
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Artikel Jurnal
Heterogeneity of the peat profile and its role in unsaturated sodium chloride rise at field and laboratory scales
Abstract Resource extraction in Canada's boreal ecozone increases the risk of contaminant release into the area's extensive bog and fen peatlands. Lateral spreading, then upwards transport of solutes into the vadose zone of these moss‐dominated ecosystems, could be toxic to vegetation. To evaluate…
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Artikel Jurnal
Role of degradation concepts for adsorbing contaminants in context of wastewater irrigation
Abstract Marginal water, like treated effluent or other types of wastewater, induces contaminant accumulation in different environmental compartments such as soil and groundwater. With a root zone model and daily rainfall data as input, accumulation in the case of two different degradation concepts…
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Artikel Jurnal
Drivers of regional soil water storage memory and persistence
Abstract Soil water storage dynamics link landscape and climate processes with consequent impacts on hydrologic and biogeochemical cycles, and on ecosystem functions. We explore regional‐scale, spatiotemporal dynamics of root‐zone soil water storage using spatially explicit, long‐term simulations…
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Artikel Jurnal
Analysis of water vapor adsorption in soils by means of a lysimeter and numerical modeling
Abstract Daily temperature oscillations can cause adsorption (and desorption) of atmospheric water vapor by soils. The resulting daily fluctuations in the amount of liquid water in the soil can be measured by high‐precision weighing lysimeters. We analyzed the data of a lysimeter in a sandy dune…
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Artikel Jurnal
Phosphorus cycling and spring barley crop response to varying redox potential
Abstract For arable soils, it is not clear whether closing a controlled drainage system leads to P mobilization due to water table rise and associated changes in redox‐induced biogeochemical processes. Therefore, we investigated P mobilization at different redox conditions using three spring barley…
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Artikel Jurnal
Soil hydraulic properties estimation from one‐dimensional infiltration experiments using characteristic time concept
Abstract Many different equations ranging from simple empirical to semi‐analytical solutions of the Richards equation have been proposed for quantitative description of water infiltration into variably saturated soils. The sorptivity, S, and the saturated hydraulic conductivity, Ks, in these…
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Artikel Jurnal
Characterizing soil piping networks in loess‐derived soils using ground‐penetrating radar
Abstract Soil piping remains a relatively unexplored phenomenon despite its substantial impacts on water and sediment transfer at the watershed scale at numerous locations around the world. One of the main limitations regarding the study of this singular process is the characterization of the pipe…
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Artikel Jurnal
Scaling factors in HYDRUS to simulate a reduction in hydraulic conductivity during infiltration from recharge wells and infiltration basins
Abstract Managed aquifer recharge (MAR) represents a promising technique to cope with increasing water stress worldwide. However, it can be challenging to operate MAR systems, especially concerning clogging. Clogging reduces the infiltration capacity and system efficiency of a MAR facility…
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Artikel Jurnal
Hydrological functioning of thawing soil water in a permafrost‐influenced alpine meadow hillslope
Abstract The complex variation of the hydrological functioning of soil water has been widely studied using measurements of the stable isotopic composition of either the bulk soil water (BSW) collected by the cryogenic vacuum extraction method or the mobile soil water (MSW) collected by the…
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Artikel Jurnal
Algebraic expressions for estimating the impact depths of a surface barrier over a homogeneous soil
Abstract Engineered surface barriers are used to isolate subsurface contaminants for effective long‐term containment of waste of a variety of types. The impact depths of a surface barrier are affected by the pre‐barrier recharge rate and the properties of the soil beneath the barrier. In this…
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Artikel Jurnal
A profile shape correction to reduce the vertical sensitivity of cosmic‐ray neutron sensing of soil moisture
Abstract In recent years, cosmic‐ray neutron sensing (CRNS) has shown a large potential among proximal sensing techniques to monitor soil moisture noninvasively, with high frequency and a large support volume (radius up to 240 m and sensing depth up to 80 cm). This signal is, however, more…
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Artikel Jurnal
Modeling tomato evapotranspiration and yield responses to salinity using different macroscopic reduction functions
Abstract Plant responses to salinity can be used to manage irrigation with brackish water. This study evaluated effects of brackish water irrigation on tomato (Solanum lycopersicum L.) plants, proposed a new model to describe plant relative evapotranspiration (ET) and relative yield as a function…
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Artikel Jurnal
Comparison of interpolation methods for soil moisture prediction on China's Loess Plateau
Abstract Due to limited in situ observations, prediction of large‐scale soil moisture content (SMC) for deep soil layers via interpolation is usually very challenging. This is especially true for regions with high spatial variations of terrain features. For precise prediction at a regional scale…
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Artikel Jurnal
Simultaneous multichannel multi‐offset ground‐penetrating radar measurements for soil characterization
Abstract For vadose zone studies, it is essential to characterize the soil heterogeneity. However, manual soil coring is time consuming and lacks spatial coverage. Ground‐penetrating radar (GPR) has a high potential to map these parameters. However, with conventional common‐offset profile (COP)…
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Artikel Jurnal
An empirical soil water retention model based on probability laws for pore‐size distribution
ABSTRACT Knowledge of the soil water retention curve (SWRC) is critical to mathematical modeling of soil water dynamics in the vadose zone. Traditional SWRC models were developed based on bundles of cylindrical capillaries (BCCs) using a residual water content, which fail to accurately describe the…
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Artikel Jurnal
Response of soil bacterial community and geochemical parameters to cyclic groundwater‐level oscillations in laboratory columns
Abstract Groundwater‐level oscillations change geochemical conditions, C cycling processes, and bacterial community composition, and these changes may vary vertically with depth in a soil. In this study, soil column experiments were conducted to explore variations in soil bacterial community…
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Artikel Jurnal
Pore water isotope fingerprints to understand the spatiotemporal groundwater recharge variability in ungauged watersheds
Abstract Reliable groundwater recharge quantification at the regional scale (e.g., watershed or subwatershed) is fundamental to sustainable water resource management. Although modeling at the watershed scale is gaining wide support, the long‐term monitoring needed for model calibration is often not…